Sleep Chart

README.md

This is a script made to work nodejs. It requires node-canvas. It uses data from minute-agent

sleep.js

var Canvas = require('canvas'),
    fs = require('fs');

var keystrokes = fs.readFileSync('../keystrokes_all.log', 'utf8');
var lines = keystrokes.split('\n').slice(1);

var width = 1024, height = 768;

var c = new Canvas(width, height);
var ctx = c.getContext('2d');

ctx.fillStyle = '#fff';
ctx.fillRect(0, 0, width, height);
var gaps = {};

for (var i = 0; i < lines.length - 2; i++) {
    var gap = +lines[i + 1].split(',')[0]  - (+lines[i].split(',')[0]);
    var d = new Date(lines[i + 1].split(',')[0] * 1000);
    var dayhash = d.getMonth() + '-' + d.getDate();
    gaps[dayhash] = (!gaps[dayhash] || gap > gaps[dayhash]) ? gap : gaps[dayhash];
}

var agaps = [];

for (i in gaps) {
    agaps.push(gaps[i]);
}

// I don't sleep for more than a day
agaps = agaps.filter(function(g) {
    return g < (60 * 60 * 24);
});


ctx.font = '22px Helvetica';
// ctx.textAlign = "center";

var title = 'HOURS OF SLEEP PER NIGHT';

var xm = 0;
var w = ~~(width / agaps.length) + 0;
for (var i = 0; i < agaps.length; i++) {
    var hrs = agaps[i] / 6000;
    ctx.fillStyle = '#E9E5E0';
    ctx.fillRect(xm + 1, 0, w, height);
    ctx.fillStyle = '#000';
    ctx.fillRect(xm + 1, 0, w, ~~(height * (hrs / 24)));
    xm += w + 1;
}

var eight = ~~(height * (8 / 24));

ctx.fillStyle = '#E9E5E0';
ctx.fillRect(160, eight, 155, 40);

ctx.globaAlpha = 1;
ctx.fillStyle = '#222';
ctx.fillRect(0, eight, width, 1);
ctx.fillText('eight hours', 160, eight + 30);

fs.writeFileSync('sleep_new.png', c.toBuffer());